Clinker oven



July 13, 1948. D. H. WILHlTE CLINKER OVEN Filed Aug. 28, 1946 2Sheets-Sheet 1 INVENTOR.

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Patented July 1 3, l94

CLINKER OVEN Don H. Wilhitc, Kirksville, Mo., assignor to Ralph Eggert,Adair County, Mo.

Application August 28, 1946, Serial No. 693,422 11 Claims. (Cl. 126-242)The present invention relates to clinker ovens,

and is particularly concerned with an improved device by means of whichclinkers may be removed from stoker fired furnaces of all kinds and leftto cool in such manner that the obnoxious gases are carried away by thenatural draftof the furnace.

One of the objects of the invention is to provide an improved attachmentfor stoker fired furnaces which is adapted to be used upon practicallyall of the difierent types of furnaces on the market by beingsubstituted for the firing door and hung upon the same hinge lugs fromwhich this door may be removed, and by means of which the clinkers maybe removed through the firing door and placed in this device for coolingto a condition which no longer involves the high temperatures orobnoxious gaseswhich are present when the clinker is first removed.

the fire pot are still in full view, and so that they r are readilyaccessible through the opening in'the clinker oven.

Another object of the invention is to provide an improved clinker. ovenwhich may be arranged with its ash drawer for right-hand or left-handremoval, and which is so arranged that the ash drawer chamber isautomatically kept clean, all ashes and parts of the clinker fallinginto the removable ash drawer. I

Another object of the invention is to provide an improved clinker ovenfor stoker. fired furnaces of all kinds, which is sturdy,- simpleinstructure, efficient, and adapted to be manufactured at a very low cost,so that it may be sold at a price which is within the range of a largenumber of the purchasing public. I

Other objects and advantages of the invention will be apparent from thefollowing description and the accompanying drawings, in which similarcharacters of reference indicate similar parts throughout the severalviews. H

Referring to the drawings, ofwhich there are two sheets, 7

Fig. '1 is a sideelevational view of a stoker fired .furnace'providedwith a clink oven ying vention. g I,

Fig. 2 is a fragmentary side elevational view on a larger scale, withcertain of the parts in partial section to show the details ofstructure.

Fig. 3 is a'front elevational view of the clinker oven attachment withparts of the housing broken away to show the internal structure.

Fig. 4 is a horizontal sectional view taken on the plane of the line 4-4of Fig. 3 looking in the direction of the arrows.

Fig. 5 is a fragmentary sectional view taken on the plane of the line 5-5 of Fig. 3 lookingin the direction of the arrows, and showing thedetails of structure of -the hinge door stop for the upper or connectingsection of the oven.

Referring to Fig. 1, this is a diagrammatic view showing the completeinstallation in which Ill indicates generally the stoker fired furnace,H the stoker, and 12 the feed tube from the stoker to they furnace in afront fired installation. I3 indicates in its entirety the clinker oven,which preferably comprises an upper or connecting section I4 and a loweror clinker receiving housing The housing [5 preferably comprises arectangular sided sheet metal housing which is provided with a door H5at one end. The housing Illpreferably has an open top which is borderedby an inwardly projecting flange I! or a top wall ll having arectangular opening l8. The rectangular opening I8 is small enough sothat the flange ll of the top wall overlies the ash drawer I9 to preventashes or clinker parts from falling between the ash drawer l9 and thehousing l5. Aperture I8 is preferably rectangular in shape, but smallerthan the top opening area of the ash drawer. 7

In addition to the open top wall ll, the housing I5 comprises a pair ofside walls 2D, 2!, and end Wall 22, and a bottom Wall 23. In someembodimerits of the invention the top wall I! may be formed by bendingover parts of the side and end walls, and three of the. walls, such asthe rear wall ill, bottom wall 23, and front wall 2!, may consist of oneintegral piece bent into proper shape. In otherv embodiments of theinvention allof these walls, ll, 20, 21, 22, may consist of separatepieces of sheet metal, such as steel, which are welded together at theircorners to provide a substantially air-tight compartment.

The top wall. I! of the lower housing 15 may be formed by the lowerportion of a U-shaped member which forms the upper connecting portionl4. Such a U-shaped member may include, beside the bottom portion ll ofthe U, a pair of the upper opening l8.

the housing to the upper corner 29 adjacent the fire door opening, andthese beveled edges" are engaged by a suitable door 36 which may-behinged to the side wall 25. The opening for the door 30 may be framed bythe top member 23,

side walls 24 and 25, and at its lower edge byia special V-shaped anglemember 3| which may, in some embodiments of the invention, be turned upand form an integralpart of the wall ll.

' The. door 30. preferably comprises a substantially, rectangular metalmember which is provided with hinge lugs 32, 33, projecting from itsright-hand edge, and provided with apertures for receiving. the hingepintle 3.4.. The. side wall 25 of the upper housing portion 14 is alsoprovided with outwardly projecting hinge lugs 35, 36, suitably locatedto engage the lower sides of the. hinge lugs. 32,33, and-provided withregistering apertures for the pintle rod 34.

The hinge lugs 32, 3.3 are welded to cover 30, while hinge lugs 35, 36are welded to side wall 25, and the lugs may be provided with a lateralextension having an upper stop surface 31 in each case for engaging thedoor 30 and holding it in open position.

Pintle rod 34 may consist .of a cylindrical steel rod of suitable sizehaving a laterally turned upper end 38 serving as a thrust member todeterminethe final position of the rod in the hinge lugs. At its left.end the door .30. is preferably provided with a suitable pivoted latch39. This latch may consist of a strap of steel pivotally mounted at .40on the cover 3.!) by means of a rivet, and having its end projectingbeyond the cover to engage a keeper 4|. A handle strap 42 is, preferablybent to U-shape, and has its attaching flanges riveted to the latchstrap. 39.

A stop member 4?..for the. latch may also be of substantially U-shape,and may pass through the handle strap 42 and have its. attaching flangesriveted to the, cover 3!] at each end 44. The keeper 114.! may consistof astrap of steel, which has one side welded to the. side 24, and whichprojects outwardly beyond the adjacent edge of the cover 30.

Just beyond the beveled edge 21 of the side wall 2-4 the keeper 4| isprovided with a rectangular slot 45, the outer wall of which serves as aretaining shoulder for engaging the latch 39.

The operation of the latch will be apparent from its structure, as it isurged into latching position'by gravity, and it may be unl'atched bylifting on the. handle '42.

"The'lower housing I5 is preferably provided with an inwardly turnedflange 46 surrounding Flange 46'and flange l'i are provided with aplurality ofregularly spaced apertures, such as an aperture at eachcorner, for. receiving screw bolts 41 having nuts 48, by means of whichthe lower housing is hung from the upper or connecting housing l4.

Thepresent clinker oven is preferably so :constructed that itmay replacethe. ordinary firing door on the furnace on which it is intended to beused. For this purpose the rear opening 49 in the upper housing, I4 ispreferably of the same size as the opening for the firing door. Thus theedge of the opening 49 engages the firing door opening on the furnace inthe same manner as the firing door.

In order to provide for the support of the assembly on the firing doorhinges the upper housing I4 is provided with a pair of hinge lugs 58welded to the side wall 22 adjacent the opening .49, and provided withaligned apertures 5| for receiving a pintle rod similar to the pintlerod 34, this being the pintle rod which formerly supported the firingdoor.

- The lugs 50 may then engage similar hinge lugs .on thefiring doorframe of the furnace Ii), and

the attachment is pivotally supported in the same way that the firingdoor was before its removal. At its side opposite to the hinge lugs '59the side wall24 is provided with a short angle member 5.2 welded .to theside wall and projecting far enough to engage the keeper 53 carried bythe wall of the furnace H]. In this case the looseness of the pivotalsupport at the hinge lugs 50. is sufficient to permit the whole assemblyto be lifted slightly at its left side until the latch 52 engages thekeeper 5.3 on the firing .door frame.

Instead of being supported on the floor, as in some of the devices ofthe prior art, the ash housing i5, is thus carried from the connectingportion i l of the housing, and may be short enough to clear the coalfeed tube 12 from a front stoker installation. A h housing 55 is alsoprovided with a door it at one end, and this door is provided with hingelugs 54 having apertures for receiving pintles 5.5, which also' passthrough the hinge lugs 56 on the front wall 2| of the lower housing l5.In this case the pintles 5 5 are riveted in place, but may also consistof one single pintle rod 34, if desired.

The ash housing door It may be provided with alatch 5] at its left side(Fig. 2), and a rear wall '20 with a keeper 58 for engagement with thelatch 51. In this case the latch 51 maybe pivotally mounted upon anangular bracketm5 9, and may have a groove 60 for engagement with thekeeper5'8 carried by the rear wall 20. Thence the lower section I5 issupported by bolts and nuts 41, 48 on the upper housing Hi. It will beapparent that it may be attached with the door I6 opening toward theleft side of the furnace or the right side of thefurnace,whicheverlocation is most desirable from the point of view ofremoval of the drawer l9 The clinker drawer l9 may consist of a sheetmetal member preferably constructed of sheet steel of suitable gauge,like all of the other housing members anddoors. Clinker drawer [9comprises a'bottom 6|, front and rear walls 52, 63, and end walls .64,65. The end wall 64, which faces the opening .Closed by the door 16, ispreferably provided with a, handle 65a, which may consist of a U-shapedmember having its laterally turnedends pivotally mounted in lugs '66carried by the end wall 64. Thus handle 65 swings downward when notneeded, and enables the use of-the full space the clinker drawer l9.

In order to carry the clinker drawer 19. once it has been removed bymeans of the handle 65, it is preferably provided with a bail :61 whichmay consist of a U-shaped steel rod having its outwardly turned ends 68pivotally mounted inaperia h sie f tures m' the side wausszgss' or theclinker drawer I9. The legs of the 'U-shape'd bail 61 spring outward toretain the trunnions 68 in their aperbetween the ends of the drawer toachieve a balance. In some embodiments of the inventio a pair of bailsmay be used. r The length of the legs of the bail 61 is preferably suchthat the bail tips over into engagement with the end wall 64 adjacentits upper edge, as shown in Fig. 3, but beneath the flange I1, so thatthe bail does notinterfere with the dropping clinkers.

. The sides and bottomof the clinkerdrawer H] are welded together attheir edges, and may-be formed out of one or more pieces, as desired.

In order to protect the door 30 of the upper housing [4 from heat it ispreferably provided 'with a bafiie plate 69 similar to the bafiieplatesusually employed upon the firing door! This may consist of a plate, ofsheet metaL such as steel,

flwhich is spaced from the door 30 byv tubular sleeves"!!! carried bythe bolts H, which may be locatedat each of the corners of ,the baflieplate.

Bafiie plate 69 may have suitable apertures which are staggered withrespect to the'damper openings 12 in the door 30, whichare adapted to beclosedby means of a suitable sliding damper I3 actuated by a. knob 14carried-by a bolt extending through a slot 15. The damper openings 12and damper 13 may be similar to that employed on the firing door-whichthis attachment is intended to replace- 3 w a The operation of myclinker oven is as follows: The firing door upon the furnace lllmay beremoved and the same pintle rod utilized for securing the presentattachment in its place. The attachment is then swung around until itslatch I 52 engages the keeper 53 on the furnacain which position theedges of the upper housing [4 engage 1 the edges of the'firing dooropening quite closely to effect a substantial closure. However, theclosure canbeimade air-tight by means of suitable initiallyplasticfurnace' cement, and thus the leakage of air at thisv point can,be reduced to a minimum. This is of. importance when the stoker l lisactuallygoing, and the forced air feed causes an increase of .pressureinside the furnace which might otherwise resultin the smoke leaking outthrough the connection between the clinker oven and the furnace. 1

' When the furnace is to beserviced and clinkers and on account of thebevel of the "upper edges 21 of the side walls 24 and 25, a full view ofthe interior of the furnace is permitted, and the operator may reach inwith his clinkertongs in -substantially the same manner as .he could be-.fore the attachment was placed on the furnace.

While this isbeing done, the door 30 is sup- I portedin its openposition .upon the door stops .31, and the clinkermaybe drawn out of thefiring door into the upper housing section l4 and droppedinnnediatelyainto theclinker drawer [9 be handled by the present'clinkerovenwithout breaking, as the full' area of the firing door is availablefor" clinkerremoval." In any event,

' should the clinkerbe toolarge to pass through by afew blows with theclinker tongs, causing it to drop into the clinker drawer l9.

When ash is removed, a shovel or suitable tool may be employed, and theash need only be moved as far as the opening l8 when it may be dropped Ithe clinkers and ash have been removed, the door is then closed, and theclinkers and ash are pref erably left there to cool until the nextcleaning operation, when the door I6 may be opened for removal of theclinker from the lower housing [5.

The device is preferably made of relatively heavy gauge steel, adaptedto withstand the heat of the clinkers without substantial damage ordeformation. Whilethe clinker is cooling, the gases which pass off fromit are drawn into the furnace by the natural draft which takes placebetween operations of the stok-er, air finding its way into the spacesurrounding the clinker through the leakage of the doors. In any event,such gases tend to pass upward out of the opening l8 and into the firedoor, and the amount of smoke or gas escaping into the room is reducedto a minimum.

To remove the drawer it is only necessary to lift the latch 51 and thento pull upon the drawer handle 65 until the bail .61 is accessible.

The clinker'now having cooled, the entire assembly will be cool, and thebail may be grasped and used for carrying the clinker drawer outside, tobe emptied at any suitable point.

a In some embodiments of the invention the device may be provided with apair of drawers, one being available to replace the other immediately,

so that it is not necessary to empty the drawer precise details ofconstruction set forth, but desire or ash removed, the door 30 may thenbeopened,

to avail myself of all changes within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is: i

l. A furnace installation comprising a furnace having a firing dooropening surrounded by a frame, hinge mean-s carried by said frame, and aclinker disposal unit, said unit being provided with complementary hingemeans for engaging said frame hinge means to pivotally secure said unitto the frame and enable said unit to be swung away from said opening andcomprising an upper Y housing section and a lower housing section, the

lower housing section being provided with an upper opening communicatingwith the upper housing section, and the upper housing section beingprovided with a door on its forward side for access to both the firedoor opening and the lower housing section, whereby a. clinker or thelike may be removed from the furnace and dropped into the lower housingsection.

2. A furnace installation comprising a furnace having a firing dooropening surrounded by a frame, hinge means carried by said frame, and aclinker disposal unit, said unit being provided with complementary hingemeans for engaging the fire door frame and comprising an upper housingsection and a. lower housing section, the

' lower housing section being provided with an the opening I8, it may"be broken at'that point 'housingsection,

upper opening communicating with the upper and the upper housing sectionhaving a keeper at the other side opposite to the hinge lugs forengagement with a fire door latch, the fire door being removed, aclinker disposal unit comprising a member provided at its upper rear endwith box-like walls located to en age the fire door opening frame, hingelugs on one of said box-like walls, and having apertures adapted toregister with the apertures of the hinge lugs on the fire door openingframe, a pintle passing through all of the hinge lugs, a latch carriedby the opposite box-like wall and located to engage the keeper on thefire door opening frame, said box-like walls having a lower opening inthe lowermost of said walls, and a container depending from saidbox-like walls and communicating with said opening for receiving aclinker which is withdrawn from the fire door opening and dropped intosaid container, said box-like walls having their rear side opposite tothe furnace provided with an opening and a pivoted closure for saidopening, the said opening extending diagonally toward the furnace andupward, whereby when the closure is open a standing operator may lookinto and downwardly into the furnace through the fire door opening, andmay insert a straight clinker tong through the diagonal opening and thefire door opening to grasp a clinker located below the door opening.

DON H. WILHITE.

, 10 REFERENCES CITED The following references are of record in the fileof this patent:

UNITED STATES PATENTS Number Number Name Date Walker Aug. 13, 1861Woodruff Mar. 14, 1871 Van Duzen May 12, 1885 Lind Oct. 1'7, 1922 PefierDec. 12, 1922 Schellcrosslee Nov. 2 1933 Glenn Oct. 30, 1934 Burch Mar.24, 1936 Franke May 3, 1938 Herndon Oct. 10, 1939 McIntire July 30, 1940Richardson June 3, 1941 Anderson Oct. 3, 1944 FOREIGN PATENTS CountryDate Great Britain 1910 Sweden Oct. 6, 1936 Germany Dec. 10, 1904

